Cap for electrical attachment-plugs and the like.



No. 835,468. PATENTED NOV. 20, 1906.

,F. E, SEELBY. GAP FOBEEEGTRIGAL ATTACHMENT PLUGS AND THE LIKE.

' APPLICATION IILIJD APR.Z3,1906. I

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UNITED TES,

PATENT OFFICE.

FRANK E. .SEELEY, OF BRIDGEPORT, CONNECTICUT, ASSIGNOR TO THE BRYANT ELECTRIC COMPANY,

OF 'BRIDGEPORT, CONNECTICUT, A

- CORPORATION OF CONNECTICUT. I

GAP FOB. ELECTRICAL,ATTACHMENT-PLUGS AND THE |.|KE

Specification of Letters Patent.

23, 1906. Serial No. 313,284. I

Application filed April To all whom. zit may concern:

Be it known that I, FRANK 'E. SEELaY, a

citizen of the United States of America, re-

siding in Bridgeport, in the county of Fairfield, in the State of Connecticut, have invented certain new and useful Improvements in Caps for Electrical Attachment- Plugs and the Like, of which the following is as ecification. 4

he object of my invention is to rovide for the metallic caps of electrical attac ment- 1 plugs, sockets, and the likea simple form of astem'n which will at the same time b secure an present a good appearance. his

I object I attain bythe construction I will now 'plug, Fig. 1. ,Fig. 4 is a view of the insulat ing-disk and attached ca partly in section.

Fig. 5 is a section on t e line 5 5, Fig. 2,

drawn to a larger scale; and Fig. 6 is a view of an electric-lamp socket provided with my invention. I

My invention maybe applied to many dif: ferent forms of attachment-plugs or sockets, and those illustrated are shown only by way of example;

In the form of plug shown in Figs. 1 to 5 the insulating-body A of the plug carries the usual two terminals 7 and 8,01 the Edison type, and a part of this bod is a disk A of porcelain ant the like, provi ed with pockets 9 on its under face to contain nuts 10 in such way that the nuts cannot turn in the pockets. Headed screws 11, assing from the outside of the rims of the isk through radial 'openi G. W. Goomuoea.

ings in the latter, are threaded with nuts 10.

Patented Nov. 20, 1906.

B is the metallic ca having an insulating bushing I), through w 'c-h the insulated wires pass to be connected up to the terminals on the back of the insulating disk A. The common way of securing this cap on the plug bayonet-slots; but this form of fastening is neither as secure nor as sightly as might he wished. I meet the difficulty by cutting in the edge of the flange straight notches 13 to passover the stems of the screws and by unchin or otherwise form on the outer ace of the flange adjacent to both edges of each notch pro ections 14 in suchposition adjacent to the edge of the flange that when the cap has been fitted onto the disk A and the screws 11 screwed up the projections 14 will be in engagement with the heads 15 of the screws, as shown in Figs. 1, 3, and 4, and

screws are turned back ar enough to free their heads" from said projections.

struction of fastening as applied to an elec- FRANK E. SEELEY.

Witnesses H. W. Gonnsnonoueu,

has been to cut in the edgeof its flange 12.

trio-lamp socket of the type shown in the hold the cap from being ulled off until the In Fig. 6 I have shown my described con- 

